T1639.001: Exfiltration Over Unencrypted Non-C2 Protocol
Essential information
- MITRE technique ID
T1639.001- Confidence
- 100/100
- Revoked
- No
- Published
- 06/04/2022 15:22
- Modified
- 27/03/2026 01:41
- Author / Source
- The MITRE Corporation
Platforms
android iOS
Description
Adversaries may steal data by exfiltrating it over an un-encrypted network protocol other than that of the existing command and control channel. The data may also be sent to an alternate network location from the main command and control server.
Adversaries may opt to obfuscate this data, without the use of encryption, within network protocols that are natively unencrypted (such as HTTP, FTP, or DNS). Adversaries may employ custom or publicly available encoding/compression algorithms (such as base64) or embed data within protocol headers and fields.
Kill chain phases
| Kill chain | Phase |
|---|---|
| mitre-mobile-attack | exfiltration |
Marking (TLP)
Copyright 2015-2025, The MITRE Corporation. MITRE ATT&CK and ATT&CK are registered trademarks of The MITRE Corporation.